implement codegen support for pre/post inc/dec.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39765 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CodeGenFunction.h b/CodeGen/CodeGenFunction.h
index acefedf..fe570fe 100644
--- a/CodeGen/CodeGenFunction.h
+++ b/CodeGen/CodeGenFunction.h
@@ -316,7 +316,7 @@
 
   // Unary Operators.
   RValue EmitUnaryOperator(const UnaryOperator *E);
-  // FIXME: pre/post inc/dec
+  RValue EmitUnaryIncDec  (const UnaryOperator *E);
   RValue EmitUnaryAddrOf  (const UnaryOperator *E);
   RValue EmitUnaryPlus    (const UnaryOperator *E);
   RValue EmitUnaryMinus   (const UnaryOperator *E);